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Table 2 C, total N (TN), and total P (TP) contents in the different sizes of aggregates in forest and paddy soils

From: Nitrogen addition reduced carbon mineralization of aggregates in forest soils but enhanced in paddy soils in South China

Soil Particle size (μm) Proportion (%) SOC (mg g−1) TN (mg g−1) C/N TP (mg g−1) N/P
Forest soil Bulk soil 30.3 ± 1.2c 2.15 ± 0.13b 14.1 ± 0.9b 0.45 ± 0.03a 4.83 ± 0.51b
250–2000 12.0 ± 1.9a 43.3 ± 1.6e 2.07 ± 0.05b 21.0 ± 1.3d 0.43 ± 0.04a 4.87 ± 0.48b
53–250 27.6 ± 0.8b 28.3 ± 1.8c 2.14 ± 0.07b 13.2 ± 0.7b 0.46 ± 0.07a 4.72 ± 0.94b
< 53 56.8 ± 2.1c 19.3 ± 1.7a 2.26 ± 0.07b 8.5 ± 0.5a 0.49 ± 0.03a 4.64 ± 0.35b
Paddy soil Bulk soil 24.1 ± 1.1b 1.82 ± 0.21a 13.4 ± 2.0b 1.09 ± 0.07b 1.68 ± 0.27a
250–2000 8.1 ± 0.4a 34.9 ± 2.4d 2.07 ± 0.13b 16.9 ± 0.4c 1.27 ± 0.13c 1.65 ± 0.27a
53–250 25.2 ± 5.8b 31.0 ± 1.2c 1.82 ± 0.16a 17.1 ± 0.9c 0.99 ± 0.09b 1.85 ± 0.25a
< 53 65.2 ± 4.7d 21.6 ± 1.2ab 1.65 ± 0.09a 13.1 ± 0.2b 1.04 ± 0.15b 1.60 ± 0.17a
  1. Different letters denote the significant differences among different particle sizes of aggregates by one-way ANOVA (p < 0.05)